Synthesis of Graphite-coated Copper Nanoparticles by the Detonation of a Copper-doped Emulsion Explosive

Luo, Ning; Liu, Kai Xin; Li, Xiao Jie; Wu, Zhen; Wu, Shi Yu; Ye, Lin Mao; Shen, Yang

doi:10.1016/j.mencom.2012.09.006

Cited by 12 publications

(9 citation statements)

References 22 publications

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“…An example of preparation of such systems is electrodeposition coating of a graphene-supported 2D ensemble of gold nanoparticles (55 nm size) by a monolayer of palladium atoms. 98 This catalyst having smaller nanoparticles than traditional catalysts of gold particles (*16 ± 19 nm) is structurally stable, environmentally safe and has a higher hydrogen after-burning coefficient. 108,109 As the number of atoms in the cluster decreases, the distance between the energy levels increases and the catalytic activity of nanoclusters sharply grows.…”

Section: V1 Fragmentation Of Cluster Catalystsmentioning

confidence: 98%

“…98,99 The electron rearrangements in nanoclusters occur over picoseconds and cannot always be monitored by modern measuring instruments. Important thermally activated processes accompanied by various quantum effects, in particular, the considerable decrease in the electron free path length occur on this spatial and temporal scale.…”

Section: Specific Details Of Thermal Size Effects In the Cluster/smentioning

confidence: 99%

“…For example, unlike noble metals, nanodispersed copper materials having high electrical and heat conductivity are highly chemically reactive: in open air, they are soon coated by an oxide film even at room temperature. 98 Graphite coating solves the problem of protection of metal nanoparticles, which rapidly degrade under the action of air oxygen and opens the prospects for replacing the functional noble metal particles by carbon-coated particles of cheaper metals (e.g., iron or copper), in particular, for the design of the hardware components for data recording, storage and processing devices and for the manufacture of stable magnetic liquids. It is necessary to add that graphitecoated particles are more compatible with biological tissues than particles of gold and other platinum group metals.…”

Section: V2 Interfaces In M/g N Systemsmentioning

confidence: 99%

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Stability and thermal evolution of transition metal and silicon clusters

Полухин¹,

Vatolin²

2015

Russ. Chem. Rev.

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ContentsRussian Chemical Reviews 84 (5) 498 ± 539 (2015) # 2015 Russian Academy of Sciences and Turpion Ltd V A Polukhin, N A Vatolin Russ. Chem. Rev. 84 (5) 498 ± 539 (2015) 499 { Structure designations: Ih is icosahedral, fcc is face-centred cubic, hcp is hexagonal close-packed, bcc is body-centred cubic, pc is primitive cubic; sph is sphalerite type. V A Polukhin, N A Vatolin Russ. Chem. Rev. 84 (5) 498 ± 539 (2015) V A Polukhin, N A Vatolin Russ. Chem. Rev. 84 (5) 498 ± 539 (2015)

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Section: V1 Fragmentation Of Cluster Catalystsmentioning

confidence: 98%

Section: Specific Details Of Thermal Size Effects In the Cluster/smentioning

confidence: 99%

Section: V2 Interfaces In M/g N Systemsmentioning

confidence: 99%

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Stability and thermal evolution of transition metal and silicon clusters

Полухин¹,

Vatolin²

2015

Russ. Chem. Rev.

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“…They prepared metal-salt and explosive xerogel through sol-gel first, and then the explosive precursor xerogel were initiated through a detonator in an explosive chamber. [16][17][18] The preparation process of the explosive precursor xerogel is complicated and its density is low. In view of this, we proposed a simple method to prepare high-density explosive precursors.…”

Section: Introductionmentioning

confidence: 99%

Carbon-coated copper nanoparticles prepared by detonation method and their thermocatalysis on ammonium perchlorate

Ding

et al. 2017

AIP Advances

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Carbon-coated copper nanoparticles (CCNPs) were prepared by initiating a high-density charge pressed with a mixture of microcrystalline wax, hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX), and copper nitrate hydrate (Cu(NO3)2·3H2O) in an explosion vessel filled with nitrogen gas. The detonation products were characterized by transmission electron microcopy (TEM), high resolution transmission electron microcopy (HRTEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and Raman spectroscopy. The effects of CCNPs on thermal decomposition of ammonium perchlorate (AP) were also investigated by differential scanning calorimeter (DSC). Results indicated that the detonation products were spherical, 25-40 nm in size, and had an apparent core-shell structure. In this structure, the carbon shell was 3-5 nm thick and mainly composed of graphite, C8 (a kind of carbyne), and amorphous carbon. When 5 wt.% CCNPs was mixed with 95 wt.% AP, the high-temperature decomposition peak of AP decreased by 95.97, 96.99, and 96.69 °Cat heating rates of 5, 10, and 20 °C/min, respectively. Moreover, CCNPs decreased the activation energy of AP as calculated through Kissinger’s method by 25%, which indicated outstanding catalysis for the thermal decomposition of AP.

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“…The preparation of emulsion explosives includes emulsification, sensitization and the packaging. (Mudene et al, 2010;Li et al, 2014;Nuntawong et al, 2013;Luo et al, 2012) With the development of application requirements, the variety of emulsion explosives has undergone major changes. Some large cartridge emulsion explosives have appeared, whose charge diameters are 35 mm, 70 mm and so on.…”

Section: Introductionmentioning

confidence: 99%